Earthquake Hazards
Earthquake Hazards
The USGS monitors and reports on earthquakes, assesses earthquake impacts and hazards, and conducts targeted research on the causes and effects of earthquakes. Explore and search below.
Earthquake Information
Earthquake Information
Find recent or historic earthquakes, lists, information on selected significant earthquakes, earthquake resources by state, or find webservices.
Filter Total Items: 154
2014 United States (Lower 48) Seismic Hazard Long-term Model
Seismicity catalogs, GIS shapefiles, gridded seismic hazard curve data, gridded ground motion data, and mapped gridded ground motion values are available for the 2014 National Seismic Hazard Model for the Conterminous U.S.
2008 United States (Lower 48) Seismic Hazard Long-term Model
Seismicity catalogs, gridded seismic hazard curve data, gridded ground motion data, and mapped gridded ground motion values are available for the 2008 National Seismic Hazard Model for the Conterminous U.S.
1996 United States (Lower 48) Seismic Hazard Long-term Model
Seismicity catalogs, gridded seismic hazard curve data, gridded ground motion data, and mapped gridded ground motion values are available for the 1996 National Seismic Hazard Model for the Conterminous U.S. Seismicity catalogs are available for the western U.S. (in Mw) and central and eastern U.S. (in mb).
U.S. Seismic Hazard Maps – Hawaii
U.S. National Seismic Hazard Model for the State of Hawaii defines the potential for earthquakes and ground shaking. The original model was competed in 1998 (published in 2001) and recently updated in 2021.
Earthquake Data
Selected geophysical data for research.
Update of the Hawaii Seismic Hazard Model Workshop #1
Wednesday, September 18, 2019 Honolulu, HI University of Hawaii at Manoa
2018 United States (Lower 48) Seismic Hazard Long-term Model
The 2018 Update of the U.S. National Seismic Hazard Model defines the potential for earthquake ground shaking for various probability levels across the conterminous United States and is applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. The updated model represents an assessment of the best available science in earthquake hazards...
Alaska
Probabilistic seismic hazard maps have been prepared for Alaska portraying ground motion values (peak ground acceleration and spectral amplitude at periods of 0.2, 0.3 and 1.0 seconds) at probabilities of exceedance of 2% and 10% in 50 years. Preparation of these maps followed the same general strategy as that followed for the U.S.G.S. seismic hazard maps of the contiguous United States, combining...
U.S. Seismic Hazard Maps – Puerto Rico and the U.S. Virgin Islands, Samoa and the Pacific Islands, and Guam and Northern Mariana Islands
Seismic hazard maps for Puerto Rico and the U.S. Virgin Islands, Samoa and the Pacific Islands, and Guam.
Vs30 Models and Data
The following resources are available for Vs30 (the time-averaged shear-wave velocity to 30 m depth) models and data.
Foreign Hazard Maps
Hazard model studies for selected outside-the-U.S. locations.